Duplex Doppler Ultrasound Examination of the Portal Venous System: An Emerging Novel Technique for the Estimation of Portal Vein Pressure

Singal, Ashwani K.; Ahmad, Masood; Soloway, Roger D.

doi:10.1007/s10620-009-0887-0

Cited by 26 publications

(18 citation statements)

References 60 publications

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“…While portal vein has a continuous flow with slight pulsatility, and the measurements are valid when mean flow velocities are used [12], arterial blood flow in hepatic artery is often difficult to measure adequately because hepatic artery has a rather small diameter and flow velocity waveform is often found at an inappropriate beam angle. As total liver blood flow is sometimes very difficult to measure, and as the aim of our study was to find the best way to evaluate hepatic liver blood flow, we decided to measure hepatic artery vascular resistance indices-pulsatility (Pi) and resistive index (Ri) that are angle independent.…”

Section: Commentmentioning

confidence: 99%

Doppler parameters of the maternal hepatic artery blood flow in normal pregnancy: maternal hepatic artery blood flow in normal pregnancy

Mandić-Marković

Miković

Djukic

et al. 2014

European Journal of Obstetrics & Gynecology and Reproductiv

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Section: Commentmentioning

confidence: 99%

Doppler parameters of the maternal hepatic artery blood flow in normal pregnancy: maternal hepatic artery blood flow in normal pregnancy

Mandić-Marković

Miković

Djukic

et al. 2014

European Journal of Obstetrics & Gynecology and Reproductiv

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“…Its ability to predict the grade of varices in the case of severe portal hypertension was poor, suggesting a plateau effect in which further increases in liver stiffness are not reflected in the development of the late complications of portal hypertension. The average of the Doppler parameters (SI, PVV, SPI) were slightly higher and the PVV was lower compared with the results of other studies [3,4,12,22]. We hypothesised this to be the consequence of the populations in different studies.…”

Section: Discussionmentioning

confidence: 63%

Predicting portal hypertension as assessed by acoustic radiation force impulse: correlations with the Doppler ultrasound

Cho²,

Hj³

et al. 2012

The British Journal of Radiology

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Objective The purpose of this study was to assess the value of acoustic radiation force impulse (ARFI) for evaluating portal hypertension by correlating the elasticity of liver cirrhosis, as measured by ARFI, with haemodynamic indices measured by Doppler ultrasound. Methods We evaluated the data of a total of 154 prospectively enrolled patients who underwent both duplex Doppler ultrasound and ARFI imaging. The duplex Doppler ultrasound indices, including the mean portal vein velocity, splenic index (SI) and splenoportal index (SPI) were evaluated to determine the statistical correlation with shear wave velocity (SWV) of ARFI. We also analysed the differences in the correlations between the SI, SPI and SWV of the group who had varices. The correlations were assessed with Spearman9s rank correlation coefficients. Results There was an increase of SWV in parallel with the increase of the SI (r50.409, p,0.01) and SPI (r50.451, p,0.01). In the patient group who did not have varices (n574), the Doppler indices were found to be more correlated with the SWV (SI: r50.447, SPI: r50.552, p,0.01). However, the group with varices showed no correlation between the SWV and the Doppler parameters. Conclusion SWV of ARFI was well correlated statistically with Doppler parameters, but is of limited value in predicting portal hypertension directly owing to great variability of Doppler parameters. By evaluating the correlation between ARFI and Doppler ultrasound, we suggest that the SWV might be a non-invasive supplementary tool for predicting portal hypertension.

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“…Larger studies to address these limitations are needed. Moreover, Doppler ultrasound of the portal vasculature has inherent pitfalls that make it important to refine the protocols for a more accurate assessment of portal hypertension [29].…”

Section: Resultsmentioning

confidence: 99%

Portal Vein Doppler: A Tool for Non-Invasive Prediction of Esophageal Varices in Cirrhosis

Shastri

Kulkarni

Patell

et al. 2014

JCDR

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Background and Objectives: Esophageal varices (EV), a major complication of liver cirrhosis, can lead to life threatening gastrointestinal (GI) bleeding. Esophagogastroduodenoscopy (EGD) is the gold standard for diagnosis and management of esophageal varices. However, it is not always available in resourceconstrained settings.This study was aimed at evaluating portal vein indices (PVI) using Doppler on ultrasound abdomen, which is more widely available, as tools to predict the presence of EV.

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Duplex Doppler Ultrasound Examination of the Portal Venous System: An Emerging Novel Technique for the Estimation of Portal Vein Pressure

Abstract: More studies are needed in order to remove the shortcomings in the current technique. The target is to be able to measure the actual portal pressure or at least derive an ideal venous or arterial hemodynamic surrogate marker having close correlation with the HVPG.

Cited by 26 publications

References 60 publications

Doppler parameters of the maternal hepatic artery blood flow in normal pregnancy: maternal hepatic artery blood flow in normal pregnancy

Doppler parameters of the maternal hepatic artery blood flow in normal pregnancy: maternal hepatic artery blood flow in normal pregnancy

Predicting portal hypertension as assessed by acoustic radiation force impulse: correlations with the Doppler ultrasound

Portal Vein Doppler: A Tool for Non-Invasive Prediction of Esophageal Varices in Cirrhosis

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